將 Trac 資料轉換到 Redmine

要將 Trac 的資料要搬移到 Redmine, 要如何做?

從 Trac 轉換到 Redmine 步驟

環境: Debian、Ubuntu Linux

下述步驟參考自: Redmine - RedmineMigrate - Migrating from other systems

1. scp /var/lib/trac/trac_project_name redmine.example.com:/tmp/trac_project_name # 把 trac 整個目錄的資料, 全部 scp 到 redmine 的機器上.
2. cd /usr/share/redmine
3. sudo rake redmine:migrate_from_trac RAILS_ENV="production" # 執行資料轉換, 不用擔心會影響到現在 redmine 的專案, DB 等等, 在建立時, 是會拆開的, 就算重跑也沒關係.
   

   WARNING: a new project will be added to Redmine during this process.
   Are you sure you want to continue ? [y/N] y

   Trac directory []: /tmp/trac_project_name
   Trac database adapter (sqlite, sqlite3, mysql, postgresql) [sqlite]: sqlite3 # 0.11 以上都是 sqlite3
   Trac database encoding [UTF-8]:
   Target project identifier []: trac_project_name # trac 專案名稱, 也是 redmine 的專案名稱

   This project already exists in your Redmine database. # 若有重複跑, 會問是否要蓋掉 DB
   Are you sure you want to append data to this project ? [Y/n]

   Migrating components..
   Migrating milestones....
   Migrating custom fields

   Migrating tickets...... # 有多少 ".", 就有多少 Tickets
   Migrating wiki.. # 有多少 ".", 就有多少 Wiki

   Components:      0/2
   Milestones:      0/4
   Tickets:         170/170
   Ticket files:    2/2
   Custom values:   0/0
   Wiki edits:      600/619
   Wiki files:      6/16

4. 到此就已經由 Trac 搬移到 Redmine 完成, 再進入 Redmine 把權限, 人員的關係設定起來即可.

問題

• Wiki 有些語法不同, 所以字得大小、List 的排版會有點不同, 不過大致上都正常, 都還在可以接受的範圍
• Milestone 無法對起來, 進度都是空的.

錯誤排除

若上述轉換時, 有下述錯誤的狀況, 可以依照此步驟來解決.

問題

1. cd /usr/share/redmine
2. sudo rake redmine:migrate_from_trac RAILS_ENV="production" --trace
   

   (in /usr/share/redmine)
   rake aborted!
   undefined method `find_each' for #<Class:0x7fecebccc718>
   /usr/share/redmine/vendor/rails/activerecord/lib/active_record/base.rb:1835:in
   `method_missing'
   /usr/share/redmine/lib/tasks/migrate_from_trac.rake:461:in `migrate'
   /usr/share/redmine/lib/tasks/migrate_from_trac.rake:764
   /usr/lib/ruby/1.8/rake.rb:636:in `call'

3. 此問題可見 Bug: Redmine - Defect #5087: migrate_from_trac not work on Redmine 0.9.1

解法

1. sudo vim /usr/share/redmine/lib/tasks/migrate_from_trac.rake
   

   將 461 行
   TracTicket.find_each(:batch_size => 200) do |ticket|
   改成
   TracTicket.find(:all).each do |ticket|

2. 再重新跑即可.

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• Remine 安裝及 Migrate Trac to Redmine 之超痛解決 wiki format 的相容問題